Why are banana picked green?

    Bananas grow in great bunches. When first you see such a bunch hanging from  a banana tree, you may think that     the whole bunch has    been turned topsy- turvy. instead of  pointing toward  the ground, each banana points upward  so that the bunch looks as  though it has been turned upside down. The burich is cut from the tree while the bananas are still green, for if they were allowed to ripen on the tree the skin would break open and insects would crawl in upon the fruit, spoiling it for us. Fortunately, bananas ripen perfectly at room temperature. ,